Road seal



April 4, 1939. R. R. ROBERTSON ROAD SEAL Filed April 14, 1937 2 Sheets-Sheet 1 VIIIIIIIIIIIIIIIIII/I' ME 4:? ROBERT R. ROBERTSON R. R. ROBERTSON ROAD sEA'L April 1, 1939.

Filed April 14, 1937 2 Sheets-Sheet 2 ROBERT R ROBERTSON Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE ROAD SEAL Application April 14, 1937, Serial No. 136,724

3 Claims. (01. 94--33) The present invention relates to concrete roads, and more particularly to road seals adapted to be anchored in the outer side walls of the concrete road slabs and having portions thereof projecting into .positions'to extend beyond the sides of the road to. engage in the road subgrade, or in the material forming the shoulder of a road, to provideseals to prevent the seepage of water at the sides of the road from passing down into the subgrade to undermine the road slabs.

It is an object of this invention to provide road seals, adapted normally to be associated with the road side forms, and after the pouring of .concrete to form the road slabs, are adapted to be anchored in the road slabs and to extend outwardly beyond the sides of the road, after the removal of the sideforms, to be embedded in the subgrade or in the road shoulder material to provide meansifor shedding or guiding water outwardly .into the shoulder instead of underneath the .road slabs.

.It is .also an object of this invention to provide road seals adapted to be normally held in position by means of the road side forms, until after the pouring of concrete, to permit portions of the road seals to be embedded in the concrete and allowing portions of the seals to extend outwardly into the material forming the subgrade or the shoulder of the road for directing water outwardly away from the sides of the road to protect the same;

It is an important object .of this invention to provide a concrete road with seals at the sides thereof, said seals adapted to be constructed :of sheet metal which may be either plain or coated, said :seals having portions thereof adapted to be :bent or deflected to project into the subgrade at the side of the road or into the road shoulder, to act :as deflectors for directing the water away from the sides of the road toward theouter portions of the shoulders thereby preventing the water from entering beneath the road slabs to undermine the road construction.

Other and further important objects of this invention will be apparentfrom the disclosures in the-specification and the accompanying drawings.

The invention (in preferred forms) is illustrated in the drawings and hereinafter more fully described.

On :the drawings:

Figure 1 -is a vertical cross-section of a road side form supported on a road seal embodying the principles of this invention.

Figure 2 is a vertical sectional view taken through va concrete road, the subgrade and a portion of the shoulder and illustrating the road seal partially embedded in the concrete road slab and extending outwardly beyond the side of the road.

Figure 3 is a sectional view of a modified form of road seal positioned adjacent .a fragmentary portion of a road form, and illustrating in .dotted lines, the position of a portion of the road seal adapted to be bent outwardly to extend beyond other vmodified form of road seal, in which the main plate is provided with a.-covering enclosing the major portion of the seal.

Figure 6 is a fragmentary sectional view of the modified form of road seal shown in Figure 5, with the seal embedded in the concrete and ,between the shoulder material and the subgrade forobviating the seepage of water under the road slabs.

Figure '7 is a fragmentary top plan View of another modified form of covered road seal associated with a road side form.

jLFigure v8 is a fragmentary sectional view taken on lineVIIL-VIII of Figure '7 with portions of the road form broken away and showing a pos- .sible position of a portion of the seal in dotted lines.

Figure 9 learn enlarged fragmentary isometric view of a road side form having still another modified form of road seal removably clamped on the upperportion thereof, to position an apertured flange above the subgrade for embedding in concrete to permit a portion of the modified form of the road seal to be bent outwardly, after the removal of the road form, into the dotted .lineposition to divert water outwardly away from the side of the roadinto the shouldervmaterial away from the side of the road.

.Asshown on the drawings: Referring to Figures 1 and 2, the reference numeral l indicates a road subgrade having supported thereon a concrete road slab 2 and a shoulder '3 to the outside of the road slab 2.

Theiimproved form of road seal shown in Fig 7 ures 1 and 2 comprises a main plate 4 formed of copper or galvanized steel, and having one margin thereof turned up at right angles to form an anchoring flange 5.

Before the concrete is poured and before the shoulder 3 is filled in, the road seal is supported upon the subgrade I, as illustrated in Figure 1, with the outer marginal portion of the plate 4 positioned beneath the bottom flange 6 of a road side form. The road side form is of channel construction and in addition to the bottom plate 6 comprises a side or main plate I and a top plate or flange 8.

After the road seal 4-5 is placed in position as llustrated in Figure 1, concrete is deposited to the side of the road form, toform the concrete slab 2 which embeds the anchoring flange 5 of the road seal in addition to a portion of the base plate 4 of the seal. This leaves a large portion of the base plate 4 projecting outwardly beyond the outer side wall of the road slab 2 and resting upon the shoulder supporting portion of the subgrade I. The shoulder material is now deposited to the side of the concrete slab 2 to form the shoulder 3 to embed the projecting portion of the base plate 4. This arrangement provides a seal at the side of the road whereby the projecting portion of the seal plate 4 tends to direct or guide water outwardly away from the side of the road to prevent water from entering beneath the road slab 2.

Figure 3 illustrates a modified form of road seal constructed of copper, sheet steel or the like and comprising a base plate 9 having one longitudinal margin thereof bent upwardly at right angles to form an anchoring flange II]. The opposite longitudinal margin of the plate 9 is bent upwardly at right angles to form an extension base plate II which seats against the upright member 'I' of the road side form.

After the road seal is placed in position on the subgrade adjacent the, road side form as shown in Figure 3, concrete is poured to embed the road seal. After the concrete has cured, the road form is removed and the seal extension base plate II is moved from the full line position of Figure 3 into the dotted line position to extend beyond the side of the road and rest upon the subgrade. The material for forming the shoulder 3 is then deposited to the side of the concrete road to cover the extension base plate II. A road seal is thus formed for diverting water outwardly away from the side of the road to prevent the water from entering beneath the concrete road slabs.

Figure 4 illustrates another modified form of road seal comprising a base plate I2 having one longitudinal margin thereof bent upwardly at right angles to form an anchoring flange I3. The other longitudinal margin of the plate I2 is bent upwardly to provide an extension base plate I4, the upper margin of which is bent downwardly to provide a flange I5 which normally is disposed between the extension base plate I4 and the side wall 'I of the road side form.

After the concrete has been poured to embed the road seal, the road side form is removed and the extension base plate I4 is bent downwardly from the full line position of Figure 14 intothe dotted line position to rest upon the subgrade .extension. The flange I5 is then bent outwardly from the side of the road, and the downwardly projecting flange I5, extending into the subgrade, provides an added means for diverting the water outwardly away from the side of the road to prevent the water from entering beneath the road slabs. While the base plate extension I4 of the road seal is illustrated in its extended position as being in substantially the same plane as the base plate I2, it will of course be understood that when the shoulder material is deposited above the plate I4 and said material is tamped and rolled, the projecting portion of the base plate I4 may be bent to extend down wardly in an inclined relation with respect to the plane of the main portion I2 of the road seal.

In all of the various forms of the road seals covered by this disclosure, the projecting portions of the various road seals are bent to conform to the shape of the top surface of the subgrade side extension and furthermore may be forced downwardly into the subgrade extension depending upon the nature of the material forming the subgrade and upon the amount of tamping and rolling which is exerted upon the material forming the shoulder at the side of the road.

Figures 5 and 6 illustrate another modified form of road seal adapted to be mounted in place and then embedded in the concrete, be tween the subgrade extension and the shoulder of the road, similar to the arrangement hereinbefore described in connection with the road seals illustrated in Figures 1 to 4 inclusive.

The modified form of road seal shown in Figures 5 and 6 comprises a main sheet metal plate It having an upwardly pro 'jecting anchoring flange II formed on one longitudinal margin thereof while a downwardly directed water diverting flange or apron I8 is integrally formed on the opposite longitudinal margin of the road seal. Cemented or otherwise secured to the top and bottom surfaces of the plate I6, are upper and lower coverings or coatings I9 of roofing paper'or other suitable material. The coverings I9 serve as a protection for the main portion of the seal.

Figures '7 and 8 illustrate another modified form of covering road seal comprising an angular metal body comprising an upright plate and a base or extension plate 2| integrally connected at substantial right angles to one another. The plate portions 20 and 2I are covered on both sides by roofing paper 24 or the like which is cemented in place. Integrally formed at right angles to the upper margin of the upright plate 20 is an anchoring flange 22, provided at spaced intervals with openings 23, through which concrete is adapted to extend for anchoring the road seal in place. Integrally formed on the outer longitudinal edge of the base plate 2i is a downwardly extending apron or flange 25. In this form of the device, the road seal is mounted in position, as illustrated in Fig. 8, and after the concrete has been poured to embed the portions 20 and 22 the shoulder material is deposited in place and is tamped and rolled. This treatment tends to pack down the shoulder material and also the subgrade material extending beyond the side of the road,

so that the portions 2| and 25 of the road seal may move from the full line position of Figure 8 and be diverted downwardly into a dotted line trated and described in connection with Figures 1 to 8 of the drawings. In this modified form of the road seal, the seal is engaged on the upper angular portion of the road side form to rest against the outer side of the member '1 and upon the top surface of the top flange 8 of the road form. The modified form of road seal is adapted to be removably secured in place by means of clamps 2E5 or other suitable means. This modified form of road seal comprises a main vertical or upright plate 2? of sheet copper or galvanized steel, the top margin of which is bent outwardly at right angles to form a top flange or apron 28 which normally rests upon the top flange 8 of the side form. Integrally formed at right angles to the lower longitudinal margin of the main steel plate 2? is an anchoring flange 29, provided with apertures 30 at spaced intervals for receiving concrete to hold the steel anchored in position in a concrete road slab 2. After the concrete has been poured and has cured sufi'iciently, the clamps 28 are removed, as is also the road side form. The plate 21 together with the flange 28 thereof are then bent outwardly, into the dotted line positions illustrated in Figure 9, to form a water shield or diverter which extends into the shoulder 3 above the subgrade and beneath the top surface of the shoulder. In this modified form of the road seal, the water is prevented from passing downwardly between the side of the road and the shoulder by means of the two side extensions 2"! and 28 which serve to direct the water outwardly away from the side of the road so that it is not apt to find its way beneath the road slabs to undermine the road.

It will of course be understood that various details of construction may be varied through a wide range without departing from the principles of this invention, and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. The combination with a road subgrade and a concrete slab supported thereon, of a seal device comprising a plate member supported on the subgrade beneath the concrete slab, anchoring means formed on the plate member and extending into the concrete, and an extension integrally formed with the plate member and projecting beyond the side of the concrete slab to dive-rt water away from the side of the slab to obviate the entrance of water under the slab.

2. A road seal for embedding between a concrete road slab and the road subgrade and for projection beyond the side of the road slab to be engaged between the subgrade and the road shoulder, said road seal comprising an apertured anchoring member for embedding in the concrete, a plate member integral therewith and projecting beyond the side of the concrete slab between the subgrade and the shoulder, and a deflecting flange formed on the plate member for projecting into the subgrade beneath the shoulder.

3. A road seal for embedding beneath the side of a road and the road shoulder and above the road subgrade, said road seal comprising a metal plate extending from beneath the road beyond the side of the road and beneath the road shoulder, an anchoring flange formed on the plate and embedded in the concrete of the road, a deflecting flange on the outer portion of the plate projecting into the road subgrade, and coverings on the opposite surfaces of said plate.

ROBERT R. ROBERTSON. 

